The patch titled
Subject: test_maple_tree: add test for mas_spanning_rebalance() on insufficient data
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
test_maple_tree-add-test-for-mas_spanning_rebalance-on-insufficient-data.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/test_maple_tree-add-test-for-mas_spanning_rebalance-on-insufficient-data.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Liam Howlett <liam.howlett@xxxxxxxxxx>
Subject: test_maple_tree: add test for mas_spanning_rebalance() on insufficient data
Date: Mon, 19 Dec 2022 16:20:15 +0000
Add a test to the maple tree test suite for the spanning rebalance
insufficient node issue does not go undetected again.
Link: https://lkml.kernel.org/r/20221219161922.2708732-3-Liam.Howlett@xxxxxxxxxx
Fixes: 54a611b60590 ("Maple Tree: add new data structure")
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Andrei Vagin <avagin@xxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxx>
Cc: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/test_maple_tree.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
--- a/lib/test_maple_tree.c~test_maple_tree-add-test-for-mas_spanning_rebalance-on-insufficient-data
+++ a/lib/test_maple_tree.c
@@ -2498,6 +2498,25 @@ static noinline void check_dup(struct ma
}
}
+static noinline void check_bnode_min_spanning(struct maple_tree *mt)
+{
+ int i = 50;
+ MA_STATE(mas, mt, 0, 0);
+
+ mt_set_non_kernel(9999);
+ mas_lock(&mas);
+ do {
+ mas_set_range(&mas, i*10, i*10+9);
+ mas_store(&mas, check_bnode_min_spanning);
+ } while (i--);
+
+ mas_set_range(&mas, 240, 509);
+ mas_store(&mas, NULL);
+ mas_unlock(&mas);
+ mas_destroy(&mas);
+ mt_set_non_kernel(0);
+}
+
static DEFINE_MTREE(tree);
static int maple_tree_seed(void)
{
@@ -2742,6 +2761,10 @@ static int maple_tree_seed(void)
check_dup(&tree);
mtree_destroy(&tree);
+ mt_init_flags(&tree, MT_FLAGS_ALLOC_RANGE);
+ check_bnode_min_spanning(&tree);
+ mtree_destroy(&tree);
+
#if defined(BENCH)
skip:
#endif
_
Patches currently in -mm which might be from liam.howlett@xxxxxxxxxx are
maple_tree-fix-mas_spanning_rebalance-on-insufficient-data.patch
test_maple_tree-add-test-for-mas_spanning_rebalance-on-insufficient-data.patch
